{"id":1589,"date":"2026-09-01T16:27:49","date_gmt":"2026-09-01T14:27:49","guid":{"rendered":"https:\/\/www.jidet.com\/en\/?page_id=1589"},"modified":"2026-09-01T16:46:18","modified_gmt":"2026-09-01T14:46:18","slug":"cold-roll-forming-machines-for-welded-tubes","status":"publish","type":"page","link":"https:\/\/www.jidet.com\/en\/cold-roll-forming-machines-for-welded-tubes\/","title":{"rendered":"Cold Roll Forming Machines for Welded Tubes"},"content":{"rendered":"

[vc_row][vc_column][vc_empty_space height=”30px”][\/vc_column][\/vc_row][vc_row full_width=”stretch_row_content_no_spaces”][vc_column offset=”vc_col-md-6″][vc_column_text el_class=”demi-encart demi-encart-g”]<\/p>\n

Cold roll forming machines<\/strong> for welded tube production<\/strong> enable the continuous manufacture of closed metal tubes<\/strong> from steel strip while meeting demanding requirements for dimensional accuracy, production throughput and long-term process stability.<\/p>\n

A roll forming line for welded tubes<\/strong> is far more than a conventional forming machine.<\/p>\n

It integrates a complete manufacturing process combining progressive roll forming, tube closing, in-line welding<\/strong> and additional manufacturing operations within one continuous production system.<\/p>\n

As a specialist in custom cold roll forming solutions<\/strong>, JIDET<\/strong> designs and manufactures bespoke welded tube production lines<\/strong> capable of producing technical tubular profiles in standard, high-strength and stainless steels while ensuring complete control of material behaviour and manufacturing performance.<\/p>\n

[\/vc_column_text][vc_btn title=”Contact us” style=”custom” custom_background=”#b00000″ custom_text=”#ffffff” shape=”square” align=”left” link=”url:%2Fen%2Fcontact%2F” el_class=”btn-contact demi-encart demi-encart-g”][\/vc_column][vc_column offset=”vc_col-md-6″][vc_single_image image=”1591″ img_size=”full” alignment=”center” css_animation=”fadeInRight”][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space height=”30px”][\/vc_column][\/vc_row][vc_row][vc_column][vc_separator color=”black” style=”shadow” border_width=”2″ el_class=”separtion-rouge”][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space height=”30px”][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text el_class=”txt-rouge h1-to-txt tres-fort upper”]<\/p>\n

Engineering Challenges of Industrial Welded Tube Roll Forming Lines<\/h2>\n

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Manufacturing welded metal tubes<\/strong> by cold roll forming<\/strong> relies on a continuous industrial process in which every stage – from progressive forming and tube closing to in-line welding<\/strong> – directly influences the final quality, dimensional accuracy and production stability of the finished tube.<\/p>\n

For this reason, a welded tube production line<\/strong> cannot be based on a standard machine configuration.<\/p>\n

Each project must be engineered according to:<\/u><\/p>\n

    \n
  • tube geometry (round, square, rectangular or custom closed sections),<\/li>\n
  • material grade (carbon steel, stainless steel or high-strength steel),<\/li>\n
  • integrated welding technology,<\/li>\n
  • target production throughput,<\/li>\n<\/ul>\n

    [\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/6″][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row full_width=”stretch_row_content_no_spaces”][vc_column offset=”vc_col-md-6″][vc_single_image image=”1593″ img_size=”full” alignment=”center” css_animation=”fadeInLeft”][\/vc_column][vc_column offset=”vc_col-md-6″][vc_tta_accordion title_tag=”h3″ section_title_tag=”h3″ color=”chino” active_section=”0″ el_class=”accordeon-jidet demi-encart demi-encart-d”][vc_tta_section title=”Progressive Tube Forming and Controlled Closure of Closed Sections” tab_id=”progressive-tube-forming”][vc_column_text]<\/p>\n

    A welded tube is produced through the progressive forming of a steel strip, which is continuously transformed from a flat strip into an open profile before being closed and prepared for welding.<\/p>\n

    This forming stage is fundamental because it establishes the dimensional accuracy of the finished tube and the overall stability of the manufacturing process.<\/p>\n

    The production line must ensure smooth, progressive deformation without interrupting material flow or generating excessive forming stresses.<\/p>\n

    Achieving:<\/u><\/p>\n

      \n
    • uniform material deformation,<\/li>\n
    • accurate alignment of the strip edges before closure,<\/li>\n
    • stable tube geometry,<\/li>\n<\/ul>\n

      is essential to prepare the profile for a reliable welding operation.<\/p>\n

      The number of forming stations, the design of the roll forming tooling<\/strong> and the progression of the forming sequence all contribute to controlling stress distribution throughout the strip.<\/p>\n

      Poor control at this stage may result in:<\/u><\/p>\n

        \n
      • edge misalignment,<\/li>\n
      • unstable tube closure,<\/li>\n
      • welding defects,<\/li>\n
      • dimensional variation,<\/li>\n<\/ul>\n

        These issues become particularly critical when manufacturing square<\/strong>, rectangular<\/strong> or custom closed sections<\/strong>, where corner accuracy and section geometry must remain consistent throughout production.[\/vc_column_text][\/vc_tta_section][vc_tta_section title=”Controlling In-Line Welding for Closed Metal Tubes” tab_id=”controlling-in-line”][vc_column_text]<\/p>\n

        In-line welding<\/strong> is one of the most critical stages in the manufacture of welded tubes<\/strong>, providing the structural continuity required for long-term mechanical performance.<\/p>\n

        Integrated directly into the production line, the welding process operates in perfect synchronisation with strip speed and therefore depends on:<\/u><\/p>\n

          \n
        • accurate edge preparation,<\/li>\n
        • stable tube geometry before welding,<\/li>\n
        • precise control of tube closure,<\/li>\n<\/ul>\n

          Successful welding relies on maintaining the correct balance between profile geometry, edge quality and overall process stability.<\/p>\n

          Depending on the application, the production line may incorporate several welding technologies, including:<\/u><\/p>\n

            \n
          • High-Frequency (HF) welding<\/strong>,<\/li>\n
          • TIG welding<\/strong>,<\/li>\n
          • Laser welding<\/strong>,<\/li>\n<\/ul>\n

            Each process requires dedicated engineering of the production line to ensure optimum performance.<\/p>\n

            The quality of the welded joint directly influences:<\/u><\/p>\n

              \n
            • mechanical strength,<\/li>\n
            • fatigue resistance,<\/li>\n
            • compliance with industrial specifications,<\/li>\n
            • long-term durability,<\/li>\n<\/ul>\n

              Any welding defect immediately compromises product performance and may result in component rejection or premature failure.<\/p>\n

              For high-volume manufacturing, maintaining stable welding conditions is essential to ensure reliable production at high operating speeds.<\/p>\n

              [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”Material Behaviour and Process Stability During Welded Tube Production” tab_id=”material-behaviour”][vc_column_text]<\/p>\n

              Material behaviour is one of the key parameters governing the production of welded tubes<\/strong>.<\/p>\n

              The deformation generated during progressive roll forming must be carefully controlled to maintain tube stability after closure and welding.<\/p>\n

              Phenomena such as:<\/u><\/p>\n

                \n
              • springback<\/strong>,<\/li>\n
              • strain hardening,<\/li>\n
              • internal stress distribution,<\/li>\n<\/ul>\n

                directly influence:<\/u><\/p>\n

                  \n
                • tube geometry,<\/li>\n
                • straightness,<\/li>\n
                • dimensional stability,<\/li>\n<\/ul>\n

                  whether manufacturing round, square, rectangular or custom tubular sections.<\/p>\n

                  Machine design therefore combines:<\/u><\/p>\n

                    \n
                  • optimised roll tooling geometry,<\/li>\n
                  • the correct number of forming stations,<\/li>\n
                  • progressive distribution of forming loads,<\/li>\n<\/ul>\n

                    The rigidity of the production line and the stability of the drive system are equally important in maintaining long-term process stability<\/strong>.<\/p>\n

                    The objective is to ensure consistent dimensional accuracy, excellent repeatability over extended production runs and reliable manufacturing performance, even at high production speeds.<\/p>\n

                    [\/vc_column_text][\/vc_tta_section][\/vc_tta_accordion][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space height=”30px”][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1776946357298{background-color: #c4bebe !important;}” el_class=”range-back-deg-sombre”][vc_column][vc_empty_space height=”10px”][\/vc_column][vc_column][vc_column_text el_class=”txt-blanc h1-to-txt tres-fort upper”]<\/p>\n

                    Industrial Applications of Cold Roll Forming for Welded Tube Manufacturing<\/h2>\n

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                    Cold roll forming<\/strong> of welded tubes<\/strong> is used across a wide range of industries that require closed tubular profiles<\/strong> combining dimensional accuracy, structural integrity and reliable mechanical performance.<\/p>\n

                    A welded tube production line<\/strong> enables the continuous manufacture of steel tubes with tightly controlled cross-sections, making them suitable for structural, technical and functional applications. The versatility of the process lies in its ability to deliver consistent tube geometry, high-quality welds and outstanding production repeatability, even during high-volume manufacturing.<\/p>\n

                    Welded tubes are the preferred solution wherever manufacturers seek the optimum balance between structural strength, weight reduction, material efficiency and production throughput.<\/p>\n

                    [\/vc_column_text][\/vc_column][vc_column offset=”vc_col-md-6″][vc_tta_accordion title_tag=”h3″ section_title_tag=”h3″ color=”chino” active_section=”0″ el_class=”accordeon-jidet accordeon-jidet-fond-sombre”][vc_tta_section title=”Manufacturing Structural Steel Tubes and Closed Sections” tab_id=”manufacturing-structural”][vc_column_text]<\/p>\n

                    Cold roll forming<\/strong> enables the continuous production of closed structural tubes<\/strong> designed to withstand significant mechanical loads while providing rigidity to industrial structures.<\/p>\n

                    Typical products include:<\/u><\/p>\n

                      \n
                    • square tubes,<\/li>\n
                    • rectangular tubes,<\/li>\n
                    • box sections,<\/li>\n
                    • high-inertia closed profiles,<\/li>\n
                    • welded round tubes,<\/li>\n
                    • reinforced tubular sections,<\/li>\n<\/ul>\n

                      In these applications, precise control of both the roll forming process<\/strong> and in-line welding<\/strong> ensures:<\/u><\/p>\n

                        \n
                      • consistent cross-sectional geometry,<\/li>\n
                      • excellent mechanical performance,<\/li>\n
                      • dimensional stability over the entire tube length,<\/li>\n<\/ul>\n

                        The quality of the finished tube directly influences the performance and reliability of the structures into which it is integrated.<\/p>\n

                        [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”Manufacturing Tubes for Metal Furniture and Lightweight Structures” tab_id=”manufacturing-tube-metal”][vc_column_text]<\/p>\n

                        Welded tube production lines<\/strong> are widely used to manufacture tubes for metal furniture<\/strong>, architectural fittings and lightweight structural applications.<\/p>\n

                        Typical profiles include:<\/p>\n

                          \n
                        • thin-wall rectangular tubes<\/strong>,<\/li>\n
                        • light-gauge square tubes<\/strong>,<\/li>\n
                        • aesthetic closed sections<\/strong>,<\/li>\n
                        • precision round tubes<\/strong>,<\/li>\n
                        • decorative tubular structures<\/strong>,<\/li>\n
                        • lightweight tubular profiles<\/strong>,<\/li>\n<\/ul>\n

                          These tubes are commonly used in:<\/u><\/p>\n

                            \n
                          • metal furniture,<\/li>\n
                          • retail and commercial fittings,<\/li>\n
                          • lightweight structures,<\/li>\n
                          • non-structural industrial equipment,<\/li>\n<\/ul>\n

                            Such applications require:<\/u><\/p>\n

                              \n
                            • excellent surface finish,<\/li>\n
                            • visually consistent tube geometry,<\/li>\n
                            • high dimensional accuracy,<\/li>\n<\/ul>\n

                              Stable roll forming<\/strong> and reliable in-line welding<\/strong> are essential to ensure an attractive appearance while maintaining compatibility with downstream finishing operations such as painting, powder coating and assembly.<\/p>\n

                              [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”Manufacturing Technical Tubes for Industrial Equipment and Machinery” tab_id=”manufacturing-techincal-tubes”][vc_column_text]<\/p>\n

                              Cold roll forming<\/strong> of welded tubes<\/strong> is extensively used to manufacture technical components integrated into industrial machinery and automated production equipment.<\/p>\n

                              Typical products include:<\/u><\/p>\n

                                \n
                              • conveyor tubes<\/strong>,<\/li>\n
                              • tubular machine components,<\/li>\n
                              • guide tubes<\/strong>,<\/li>\n
                              • structural tubular members,<\/li>\n
                              • functional closed profiles<\/strong>,<\/li>\n
                              • equipment support tubes<\/strong>,<\/li>\n<\/ul>\n

                                These components are commonly integrated into:<\/u><\/p>\n

                                  \n
                                • conveyor systems,<\/li>\n
                                • industrial machinery,<\/li>\n
                                • automated production equipment,<\/li>\n
                                • mechanical assemblies,<\/li>\n<\/ul>\n

                                  Maintaining:<\/u><\/p>\n

                                    \n
                                  • stable tube geometry,<\/li>\n
                                  • consistent cross-sections,<\/li>\n
                                  • high-quality welds,<\/li>\n<\/ul>\n

                                    is essential to ensure reliable integration within mechanical systems.<\/p>\n

                                    Even minor dimensional deviations may affect assembly accuracy, equipment performance and long-term operational reliability.<\/p>\n

                                    [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”Manufacturing Tubes for Energy Infrastructure and Demanding Industrial Environments” tab_id=”manufacturing-tubes-energy”][vc_column_text]<\/p>\n

                                    Roll formed welded tubes<\/strong> are also widely used in demanding industrial sectors such as energy<\/strong>, utilities<\/strong> and industrial infrastructure<\/strong>.<\/p>\n

                                    Typical applications include:<\/u><\/p>\n

                                      \n
                                    • support tubes for energy installations<\/strong>,<\/li>\n
                                    • tubular profiles for technical structures<\/strong>,<\/li>\n
                                    • mounting and fixing tubes,<\/li>\n
                                    • closed sections for outdoor equipment<\/strong>,<\/li>\n
                                    • long structural tubular<\/strong> members,<\/li>\n<\/ul>\n

                                      These products are designed to operate under demanding mechanical and environmental conditions while maintaining reliable long-term performance.<\/p>\n

                                      Their success depends directly on:<\/u><\/p>\n

                                        \n
                                      • structural strength,<\/li>\n
                                      • dimensional consistency,<\/li>\n
                                      • reliable weld quality,<\/li>\n
                                      • stable production throughout long manufacturing runs,<\/li>\n<\/ul>\n

                                        A robust cold roll forming line<\/strong> combined with a precisely controlled in-line welding process<\/strong> is therefore essential to ensure consistent product quality and uninterrupted industrial production.<\/p>\n

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                                        Custom Welded Tube Production Lines<\/h2>\n

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                                        Every welded tube manufacturing project<\/strong> presents its own engineering challenges.<\/p>\n

                                        Tube geometry, material grade, welding technology, integrated manufacturing operations and production objectives all influence the design of the production line.<\/p>\n

                                        For this reason, JIDET<\/strong> develops custom welded tube production lines<\/strong> engineered as complete industrial manufacturing systems rather than standard machines.<\/p>\n

                                        Each project is designed according to:<\/u><\/p>\n

                                          \n
                                        • tube geometry (round, square, rectangular or custom closed sections),<\/li>\n
                                        • material type (carbon steel, stainless steel or technical alloys),<\/li>\n
                                        • integrated welding technology,<\/li>\n
                                        • required in-line operations<\/strong>,<\/li>\n
                                        • target production throughput,<\/li>\n<\/ul>\n

                                          This systems engineering approach ensures outstanding dimensional accuracy, reliable welding performance and long-term process stability<\/strong>, even under demanding industrial production conditions.<\/p>\n

                                          [\/vc_column_text][\/vc_column][vc_column offset=”vc_col-md-6″][vc_tta_accordion title_tag=”h3″ section_title_tag=”h3″ color=”chino” active_section=”0″ el_class=”accordeon-jidet”][vc_tta_section title=”Engineering Roll Forming Lines for Closed Tubes and Technical Tubular Profiles” tab_id=”engineering-roll-forming”][vc_column_text]<\/p>\n

                                          Designing a welded tube production line<\/strong> requires complete control of the manufacturing process, from progressive strip forming through to tube closing and in-line welding<\/strong>.<\/p>\n

                                          The number of forming stations, the roll pass design and the forming sequence are defined according to the tube geometry and the mechanical behaviour of the material.<\/p>\n

                                          The integration of the tube closing stage and the selected welding technology is considered from the earliest phases of machine design to ensure optimum process performance.<\/p>\n

                                          Every stage of the production line is engineered to deliver:<\/u><\/p>\n

                                            \n
                                          • smooth and progressive material deformation,<\/li>\n
                                          • uninterrupted material flow,<\/li>\n
                                          • precise edge alignment before welding,<\/li>\n
                                          • consistent tube geometry throughout the manufacturing process,<\/li>\n<\/ul>\n

                                            This engineering approach guarantees:<\/u><\/p>\n

                                              \n
                                            • accurate tubular profiles,<\/li>\n
                                            • high-quality welds,<\/li>\n
                                            • outstanding production repeatability,<\/li>\n<\/ul>\n

                                              even during long production runs at high operating speeds.<\/p>\n

                                              It is particularly well suited to the manufacture of precision tubes, custom closed sections and demanding industrial tubular components.<\/p>\n

                                              [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”Integrating In-Line Manufacturing Operations into Welded Tube Production Lines” tab_id=”integrating-in-line”][vc_column_text]A high-performance welded tube production line<\/strong> integrates all essential manufacturing operations within a single continuous production process.<\/p>\n

                                              Depending on the application, integrated operations may include:<\/u><\/p>\n

                                                \n
                                              • in-line punching<\/strong>,<\/li>\n
                                              • cut-to-length<\/strong>,<\/li>\n
                                              • industrial marking<\/strong>,<\/li>\n
                                              • secondary machining or forming operations,<\/li>\n<\/ul>\n

                                                By synchronising these processes with strip movement and production speed, the line operates as one fully integrated industrial manufacturing system.<\/p>\n

                                                This approach delivers several key advantages:<\/u><\/p>\n

                                                  \n
                                                • reduced material handling,<\/li>\n
                                                • fewer secondary operations,<\/li>\n
                                                • improved production flow,<\/li>\n
                                                • greater overall manufacturing efficiency,<\/li>\n<\/ul>\n

                                                  For technical tubular products, integrating these operations enables finished components to leave the production line ready for immediate use or assembly, while maintaining outstanding dimensional accuracy and consistent product quality.<\/p>\n

                                                  This level of process integration is a major advantage for manufacturers seeking an automated tube production line<\/strong> capable of combining high productivity, exceptional quality and competitive manufacturing costs.<\/p>\n

                                                  [\/vc_column_text][\/vc_tta_section][vc_tta_section title=”Welded Tube Production Lines Designed for High-Volume Manufacturing” tab_id=”welded-tube-production”][vc_column_text]<\/p>\n

                                                  Cold roll forming lines<\/strong> for welded tubes are engineered to operate in demanding industrial environments where production continuity, process stability and consistent product quality are essential.<\/p>\n

                                                  They must sustain high production speeds while maintaining:<\/u><\/p>\n

                                                    \n
                                                  • constant dimensional accuracy,<\/li>\n
                                                  • stable tube geometry,<\/li>\n
                                                  • reliable welding performance,<\/li>\n<\/ul>\n

                                                    Achieving these objectives requires:<\/u><\/p>\n

                                                      \n
                                                    • a robust machine structure,<\/li>\n
                                                    • high frame rigidity,<\/li>\n
                                                    • precise machine adjustment,<\/li>\n
                                                    • stable drive systems,<\/li>\n<\/ul>\n

                                                      Equally important is the perfect synchronisation between the roll forming<\/strong> and in-line welding<\/strong> processes, ensuring uninterrupted production flow throughout the manufacturing cycle.<\/p>\n

                                                      A custom welded tube production line<\/strong> enables manufacturers to achieve exceptional industrial performance by combining high production throughput, precise dimensional control and complete mastery of the manufacturing process.<\/p>\n

                                                      [\/vc_column_text][\/vc_tta_section][\/vc_tta_accordion][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space height=”30px”][\/vc_column][\/vc_row][vc_row][vc_column][vc_separator color=”black” style=”shadow” border_width=”2″ el_class=”separtion-rouge”][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space height=”30px”][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text el_class=”txt-rouge h1-to-txt tres-fort upper”]<\/p>\n

                                                      Design a Welded Tube Production Line with JIDET<\/h2>\n

                                                      [\/vc_column_text][vc_row_inner][vc_column_inner width=”1\/6″][\/vc_column_inner][vc_column_inner width=”2\/3″][vc_column_text]<\/p>\n

                                                      The performance of a welded tube production line<\/strong> depends on a comprehensive engineering approach in which every stage of the manufacturing process is carefully controlled.<\/p>\n

                                                      Tube geometry, material behaviour, welding technology and integrated in-line operations<\/strong> must all work together within one fully synchronised production system.<\/p>\n

                                                      A cold roll forming machine<\/strong> for welded tubes is therefore much more than a forming solution – it is a complete industrial manufacturing system designed to deliver reliable production, consistent quality and long-term operational performance.<\/p>\n

                                                      By partnering with JIDET<\/strong>, manufacturers benefit from proven expertise in the design of custom welded tube production lines<\/strong> that integrate progressive roll forming, tube closing, in-line welding<\/strong> and complementary manufacturing operations into a single, optimised production process.<\/p>\n

                                                      The result is a high-performance manufacturing solution capable of producing technical welded tubes with exceptional dimensional accuracy, outstanding repeatability and reliable industrial productivity.<\/p>\n

                                                      [\/vc_column_text][vc_btn title=”Contact us” style=”custom” custom_background=”#b00000″ custom_text=”#ffffff” shape=”square” align=”left” link=”url:%2Fen%2Fcontact%2F” el_class=”btn-contact”][\/vc_column_inner][vc_column_inner width=”1\/6″][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"

                                                      [vc_row][vc_column][vc_empty_space height=”30px”][\/vc_column][\/vc_row][vc_row full_width=”stretch_row_content_no_spaces”][vc_column offset=”vc_col-md-6″][vc_column_text el_class=”demi-encart demi-encart-g”] Cold roll forming machines for welded tube production enable the continuous manufacture of closed metal tubes from steel strip while [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1589","page","type-page","status-publish","hentry"],"yoast_head":"\nWelded Tube Production Line | Custom Cold Roll Forming Machines for Steel Tubes | JIDET<\/title>\n<meta name=\"description\" content=\"JIDET designs custom welded tube production lines and cold roll forming machines for steel tubes and closed tubular profiles. Integrated roll forming, tube closing, in-line welding and finishing operations deliver high production throughput, outstanding process stability and exceptional dimensional accuracy.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jidet.com\/en\/cold-roll-forming-machines-for-welded-tubes\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Welded Tube Production Line | Custom Cold Roll Forming Machines for Steel Tubes | JIDET\" \/>\n<meta property=\"og:description\" content=\"JIDET designs custom welded tube production lines and cold roll forming machines for steel tubes and closed tubular profiles. 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